Figure 8.77 shows a longitudinal section PQ of rough ground through which a straight horizontal road is to be cut. The width of the road is to be 10 m, and the sides of the cutting and embankment slope at 2 horizontal to 1 vertical. Estimate the net volume of earth removed in making the road.

Transcribed Image Text:

Figure 8.77 Cross-section with distances above or below datum at 200 m intervals (not to scale). P x^x + Ax P + 3 m 17 m 6.3 m Figure 8.78 Volume of soil to be removed in road construction. 1.3 m 26 m 2 km 1.3 m 1.7 m 2.8 m 0.5 m -2h-10 m 2h Figure 8.79 Cross-section of cutting with sides sloping at 1 in 2.